California has some of the world’s most ambitious clean energy policies, but mounting climate change impacts underscore the need to ensure electricity reliability, even as the state accelerates its fossil-free transition. Modeling from GridLab and Telos Energy finds California can achieve 85 percent clean energy by 2030 without compromising reliability, even under stressful conditions. A companion report from Energy Innovation shows how state policy can leverage resource diversity, demand-side resources, and greater regional coordination to reduce reliability risks while improving environmental justice by retiring natural gas power plants.